"Good luck to the @USWNT as they take on Chile!" Biden, who is currently running for president, tweeted Sunday. "As we cheer them on in the World Cup, we must support their fight off the field for equal pay. In 2019, it’s past time we close the pay gap and ensure women get paid as much as men."

As we cheer them on in the World Cup, we must support their fight off the field for equal pay. In 2019, it’s past time we close the pay gap and ensure women get paid as much as men. #OneNationOneTeamhttps://t.co/bJQZm2aQMv

Players on the team earlier this year sued the United States Soccer Federation, alleging gender discrimination and inequity in areas including pay, practice time, practice locations, medical treatment, coaching and travel. The team won its third World Cup title in 2015 and is currently defending that title in France.

Biden, Warren, Harris and Gillibrand are among two dozen people vying for the 2020 Democratic Presidential nomination.